diff --git a/src/DependencyBuilder.php b/src/DependencyBuilder.php
index 4cd6de9..cc2688e 100644
--- a/src/DependencyBuilder.php
+++ b/src/DependencyBuilder.php
@@ -22,47 +22,73 @@ public function __construct($module)
     /**
      * Build the dependencies data array to be given to the CDC
      *
-     * @return array
+     * @return array{
+     *     "module_display_name": string,
+     *     "module_name": string,
+     *     "module_version": string,
+     *     "ps_version": string,
+     *     "php_version": string,
+     *     "locale": string,
+     *     "dependencies": array{
+     *          "min_version"?: string,
+     *          "current_version"?: string,
+     *          "installed"?: bool,
+     *          "enabled"?: bool
+     *      }
+     * }
      */
     public function buildDependencies()
     {
         $data = [
-            'module_display_name' => $this->module->displayName,
-            'module_name' => $this->module->name,
-            'module_version' => $this->module->version,
-            'ps_version' => _PS_VERSION_,
-            'php_version' => PHP_VERSION,
+            'module_display_name' => (string) $this->module->displayName,
+            'module_name' => (string) $this->module->name,
+            'module_version' => (string) $this->module->version,
+            'ps_version' => (string) _PS_VERSION_,
+            'php_version' => (string) PHP_VERSION,
             'dependencies' => [],
         ];
 
+        $context = \ContextCore::getContext();
+        if ($context !== null && $context->employee !== null) {
+            $locale = \DbCore::getInstance()->getValue('SELECT `locale` FROM `' . _DB_PREFIX_ . 'lang` WHERE `id_lang`=' . pSQL((string) $context->employee->id_lang));
+        }
+
+        if (empty($locale)) {
+            $locale = 'en-GB';
+        }
+
+        $data['locale'] = (string) $locale;
+
         $dependencyFile = $this->module->getLocalPath() . self::DEPENDENCY_FILENAME;
         if (!file_exists($dependencyFile)) {
             throw new \Exception(self::DEPENDENCY_FILENAME . ' file is not found in ' . $this->module->getLocalPath());
         }
 
-        $dependenciesContent = json_decode(file_get_contents($dependencyFile), true);
-        if (json_last_error() != JSON_ERROR_NONE) {
+        if ($fileContent = file_get_contents($dependencyFile)) {
+            $dependenciesContent = json_decode($fileContent, true);
+        }
+        if (!isset($dependenciesContent) || json_last_error() != JSON_ERROR_NONE) {
             throw new \Exception(self::DEPENDENCY_FILENAME . ' file may be malformatted.');
         }
 
-        if (empty($dependenciesContent['dependencies'])) {
+        if (!is_array($dependenciesContent) || empty($dependenciesContent['dependencies']) || !is_array($dependenciesContent['dependencies'])) {
             return $data;
         }
 
         foreach ($dependenciesContent['dependencies'] as $dependencyName => $dependencyMinVersion) {
-            $dependencyData = \DbCore::getInstance()->getRow('SELECT `id_module`, `active`, `version` FROM `' . _DB_PREFIX_ . 'module` WHERE `name` = "' . pSQL($dependencyName) . '"');
+            $dependencyData = \DbCore::getInstance()->getRow('SELECT `id_module`, `active`, `version` FROM `' . _DB_PREFIX_ . 'module` WHERE `name` = "' . pSQL((string) $dependencyName) . '"');
             if (!$dependencyData) {
                 $data['dependencies'][$dependencyName] = [
-                    'min_version' => $dependencyMinVersion,
+                    'min_version' => (string) $dependencyMinVersion,
                     'installed' => false,
                 ];
                 continue;
             }
             $data['dependencies'][$dependencyName] = [
-                'min_version' => $dependencyMinVersion,
+                'min_version' => (string) $dependencyMinVersion,
                 'installed' => true,
-                'enabled' => (bool) $dependencyData['active'],
-                'current_version' => $dependencyData['version'],
+                'enabled' => isset($dependencyData['active']) && (bool) $dependencyData['active'],
+                'current_version' => isset($dependencyData['version']) ? $dependencyData['version'] : null,
             ];
         }